Cotton gin patent accelerates cotton processingMar 14, 1794Labels: Eli Whitney, Cotton gin, U SPBSYale Archives
U.S. limits participation in international slave tradeMar 22, 1794Labels: Slave Trade, U SCongress Wiki
Louisiana Purchase expands land for cotton and slaveryApr 30, 1803Labels: Louisiana Purchase, U SNational Archives
Law bans importation of enslaved people into U.S.Mar 2, 1807Labels: Act of, Thomas JeffersonBattlefieldsAct Wiki
Missouri Compromise sets early limits on slavery’s expansionMar 6, 1820Labels: Missouri Compromise, James MonroeCensus HistoryBritannica
Indian Removal Act opens Southeast lands to cotton expansionMay 28, 1830Labels: Indian Removal, Native AmericanBritannica
Texas annexation adds major new slaveholding cotton regionMar 1, 1845Labels: Texas Annexation, Republic ofTexas LibraryBritannica
Treaty of Guadalupe Hidalgo reignites slavery-in-the-territories debateFeb 2, 1848Labels: Treaty of, Mexican CessionNational ArchivesBritannica
Compromise of 1850 temporarily defuses sectional crisisSep 9, 1850Labels: Compromise of, U SNational ArchivesBritannica
Fugitive Slave Act strengthens slaveholders’ legal powerSep 18, 1850Labels: Fugitive Slave, Millard FillmoreFugitive ActBritannica
Kansas–Nebraska Act repeals Missouri Compromise lineMay 30, 1854Labels: Kansas Nebraska, Franklin PierceBritannica
Dred Scott decision limits federal power to restrict slaveryMar 6, 1857Labels: Dred Scott, U SBritannica
Thirteenth Amendment ratification ends slavery nationwideDec 6, 1865Labels: Thirteenth Amendment, Abolition ofCensus HistoryHistory com